A full-grown bull moose can weigh up to 1,000 pounds and measure 5 to 7 feet tall at the shoulder. The species found in Wyoming and Montana is the smaller of North America's species, the shiras.

The moose wound up getting within 3 feet of the man, who can be heard in the video telling the bull it was “close enough” multiple times. “Most moose that we have encountered are spooked by ...